php数组转成json格式的方法

$value ){ // We first copy each key/value pair into a staging array, // formatting each key and value properly as we go. // Format the key: if( is_numeric($key) ){ $key = "key_$key"; } $key = "'".addslashes($key)."'"; // Format the value: if( is_array( $value )){ $value = array_to_json( $value ); } else if( !is_numeric( $value ) || is_string( $value ) ){ $value = "'".addslashes($value)."'"; } // Add to staging array: $construct[] = "$key: $value"; } // Then we collapse the staging array into the JSON form: $result = "{ " . implode( ",",$construct ) . " }"; } else { // If the array is a vector (not associative): $construct = array(); foreach( $array as $value ){ // Format the value: if( is_array( $value )){ $value = array_to_json( $value ); } else if( !is_numeric( $value ) || is_string( $value ) ){ $value = "'".addslashes($value)."'"; } // Add to staging array: $construct[] = $value; } // Then we collapse the staging array into the JSON form: $result = "[ " . implode( ",$construct ) . " ]"; } return $result; }